You are given a math word problem and you are supposed to only use subtraction on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Q: Context: A grocery store had 67 bottles of regular soda and 9 bottles of diet soda. 

 Question: How many more bottles of regular soda than diet soda did they have?

A: 58
****
Q: Context: Danny collects bottle caps. He threw away 54 of the old ones at the park while he found 48 bottle caps new ones. Now he has 52 bottle caps in his collection. 

 Question: How many more bottle caps did danny throw away than those he found at the park?

A: 6
****
Q: Context: Randy has 95 blocks. He uses 20 blocks to build a house and 50 blocks to build a tower. 

 Question: How many more blocks did he use to build the tower than he did to build the house?

A:
30
****