Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Kate bought 7 packs of red bouncy balls and 6 packs of yellow bouncy balls. Each pack contained 18 bouncy balls. How many more red bouncy balls than yellow bouncy balls did Kate buy?

### Response:
Kate bought a total of 7 packs * 18 red balls = <<7*18=126>>126 red balls.
Kate bought a total of 6 packs * 18 yellow balls = <<6*18=108>>108 yellow balls.
Kate bought 126 red – 108 yellow = <<126-108=18>>18 more red bouncy balls than yellow bouncy balls.
#### 18