You will be given a definition of a task first, then some input of the task.
You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Bianca and her mom were picking carrots from their garden . Bianca picked 26 and her mother picked 15 . If only 16 of the carrots were good , how many bad carrots did they have ?
Output:
25