<human>:  Simone ate 1/2 of an apple each day for 16 days. Lauri ate 1/3 of an apple each day for 15 days. How many apples did the two girls eat altogether?
<bot>: How many apples did Simone eat? ** Simone = (1/2) * 16 = <<(1/2)*16=8>>8
How many apples did Lauri eat? ** Lauri = (1/3) * 15 = <<(1/3)*15=5>>5
How many apples did Simone and Lauri eat? ** 8 + 5 = <<8+5=13>>13
How many apples did Simone and Lauri eat altogether? ** Together they ate 13 apples.
#### 13