text: export const calculateNumbers = (num1, num2, op) => {
    let total
    // addition
    if (op === '+') {
      total = num1 + num2
      // subtration
    } else if (op === '-') {
      total = num1 - num2
      // multiplication
    } else if (op === '*') {
      total = num1 * num2
      // division
    } else if (op === '/') {
      total = num1 / num2
    }
    return total
  }
  