You use the factor tree.
10
5 2 then you have 2 prime numbers and you have to multiply them together
24÷12.56 = 1.9108280254777070063694267515924
rounded to the nearest hundredth is 1.91

then you figure out what you divide 56 by to get 4. which is 14. then you divide 42 by the same number 14.
Answer:
148 R 0
Step-by-step explanation:
there is a website called Calculator soup