Project-Euler / 17
Problem 17 asks:
If all the numbers from 1 to 1 000 (one thousand) inclusive were written out in words, how many letters would be used?
This problem can be solved by hand. I essentially used Python as a calculator to solve it:
len("onethousand" + 900*"hundred" + 190*"onetwothreefourfivesixseveneightnine" +
100*"twentythirtyfortyfiftysixtyseventyeightyninety" + 891*"and" +
10*"teneleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteen")