19. the sum of twelve and sixteen divided by the sum of three and four = 4
20. the difference of twenty-two and six divided by the sum of five and three = 2
21. the sum of thirty-six and fourteen divided by the product of two and five = 4
22. the quotient of thirty-two and four divided by the sum of one and three = 2
23. the sum of six and fifteen divided by 24 = 21/24
24. the difference of thirteen and nine = 4
25. the difference of thirty-one and seventeen divided by the product of ten = 7/5 = 1.4