If grandma has 14 red roses and 7 pink roses and you would like to know how many more red roses than pink roses does she have, you can calculate this using the following step:
14 red roses = x * 7 pink roses
x = 14 / 7 = 2
14 red roses - 7 pink roses = 7
Result: Grandma has 7 more red roses than pink roses.