Fix error in calculation

src/Julia/Problems001-050/Problem017.jl

@@ -9,26 +9,37 @@ https://projecteuler.net/problem=17 =#
 
 using BenchmarkTools
 
-function num2letters(num, dic)
+function num2letters(num)
+    nums = Dict(
+        0 => "", 1 => "one", 2 => "two", 3 => "three", 4 => "four", 5 => "five",
+        6 => "six", 7 => "seven", 8 => "eight", 9 => "nine", 10 => "ten",
+        11 => "eleven", 12 => "twelve", 13 => "thirteen", 14 => "fourteen",
+        15 => "fifteen", 16 => "sixteen", 17 => "seventeen", 18 => "eighteen",
+        19 => "nineteen", 20 => "twenty", 30 => "thirty", 40 => "forty",
+        50 => "fifty", 60 => "sixty", 70 => "seventy", 80 => "eighty",
+        90 => "ninety", 100 => "hundred", 1000 => "thousand"
+    )
+
     if num <= 20
-        return length(dic[num])
+        return length(nums[num])
     elseif num < 100
         tens, units = divrem(num, 10)
-        return length(dic[tens * 10]) + num2letters(units, dic)
+        return (length(nums[Int(tens) * 10]) + num2letters(units))
     elseif num < 1000
         hundreds, rest = divrem(num, 100)
         if rest != 0
-            return num2letters(hundreds, dic) + length(dic[100])
-            + length("and") + num2letters(rest, dic)
+            return (num2letters(hundreds) + length(nums[100])
+            + length("and") + num2letters(rest))
         else
-            return num2letters(hundreds, dic) + length(dic[100])
+            return (num2letters(hundreds) + length(nums[100]))
         end
     else
         thousands, rest = divrem(num, 1000)
-        return num2letters(thousands, dic) + length(dic[1000])
+        return (num2letters(thousands) + length(nums[1000]))
     end
 end
 
+
 function Problem17()
     #= 
     If the numbers 1 to 5 are written out in words: one, two, three, four,
@@ -41,20 +52,11 @@ function Problem17()
     forty-two) contains 23 letters and 115 (one hundred and fifteen) contains
     20 letters. The use of "and" when writing out numbers is in compliance
     with British usage. =#
-    nums = Dict(
-        0 => "", 1 => "one", 2 => "two", 3 => "three", 4 => "four", 5 => "five",
-        6 => "six", 7 => "seven", 8 => "eight", 9 => "nine", 10 => "ten",
-        11 => "eleven", 12 => "twelve", 13 => "thirteen", 14 => "fourteen",
-        15 => "fifteen", 16 => "sixteen", 17 => "seventeen", 18 => "eighteen",
-        19 => "nineteen", 20 => "twenty", 30 => "thirty", 40 => "forty",
-        50 => "fifty", 60 => "sixty", 70 => "seventy", 80 => "eighty",
-        90 => "ninety", 100 => "hundred", 1000 => "thousand"
-    )
 
     n = 1000
     letters = 0
     for num in 1:n
-        letters += num2letters(num, nums)
+        letters += num2letters(num)
     end
     return letters
 end