Explanation:
To divide the strawberries in equal parts we have to use the rule of division. Therefore, to divide the strawberries between two friends we have to take the one-half of total number of strawberries.
This means that we have to take one-half of 18.
Mathematically,

= 9
Thus, we can conclude that we have to give 9 strawberries to each friend in order to equally divide 18 strawberries between them.