Neatly Formatted Math

Given a simple math expression as a string, neatly format it as an equation.

Examples

format_math("3 + 4") ➞ "3 + 4 = 7"

format_math("3 - 2") ➞ "3 - 2 = 1"

format_math("4 x 5") ➞ "4 x 5 = 20"

format_math("6 / 3") ➞ "6 / 3 = 2"

Notes

• You will need to deal with addition, subtraction, multiplication and division.
• Division will have whole number answers (and will obviously not involve 0).