meal_cost = float(input())

    tip_percent = int(input())

    tax_percent = int(input())

    tip = (meal_cost * tip_percent) / 100
    tax = (meal_cost * tax_percent) / 100
    totalCost = int(round(meal_cost + tip + tax))
    print(totalCost)

^paste the above code in the function defintion of function 'solve' above,..,, not inside main