Human: Edgar eats 18 pretzels a day. If his brother eats 1/2 as many, how many does his brother eat in a week? Assistant: 
How many pretzels does his brother eat? ** His brother eats 9 pretzels a day because 18 / 2 = <<18/2=9>>9
How many pretzels does his brother eat in a week? ** His brother eats 63 in a week because 9 x 7 = <<9*7=63>>63
#### 63