If all the numbers from 1 to 1000 (one thousand) inclusive were written out in words, how many letters would be used?

NOTE: Do not count spaces or hyphens. For example, 342 (three hundred and 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.

```
tens = [6,6,5,5,5,7,6,6]
AND = 3
ten = 3
hundred = 7
thousand = 8
_1_9 = [3,3,5,4,4,3,5,5,4]
_11_19 = [6,6,8,8,7,7,9,8,8]
_20_99 = []
_100_999 = []
#21_99
for i in tens:
_20_99 += [i]
for j in _1_9:
_20_99 += [i+j]
#100_999
for i in _1_9:
_100_999 += [i+hundred]
for j in _1_9:
_100_999 += [i+hundred+AND+j]
_100_999 += [i+hundred+AND+ten]
for j in _11_19:
_100_999 += [i+hundred+AND+j]
for j in _20_99:
_100_999 += [i+hundred+AND+j]
answer = 0
for i in _1_9:
answer += i
answer += ten
for i in _11_19:
answer += i
for i in _20_99:
answer += i
for i in _100_999:
answer += i
print(answer + 3 + thousand)
```

The output is 21124.

This run:~0.