In this task, you need to convert numbers from words to digits.
Output should also be a number, for example "twelve" should be output as "12".
forty eight
48
Complete the following task based on the instruction and optional input provided.### Instruction:
In this task, you need to convert numbers from words to digits.
Output should also be a number, for example "twelve" should be output as "12".

### Input:
forty eight

### Output:
48