Most Left Digit

Write a function that takes a string as an argument and returns the left most integer in the string.

Examples

left_digit("TrAdE2W1n95!") ➞ 2

left_digit("V3r1ta$") ➞ 3

left_digit("U//DertHe1nflu3nC3") ➞ 1

left_digit("J@v@5cR1PT") ➞ 5

Notes

• Each string will have at least two numbers.
• Return the result as an integer.