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

### Instruction:
Ping pong balls sell for $.10 each.  Johnny buys 10000 for a prank.  He gets a 30% discount for buying in such large bulk.  How much does he pay?

### Response:
They sell for $.10 each and he bought 10000 so that's 10000*.10 = $<<10000*.10=1000>>1000
He gets a 30% discount so that's .30*1000 = $<<30*.01*1000=300>>300 discount
He spent $1000 for the balls and has a $300 discount so that's 1000-300 = $<<1000-300=700>>700 he needs to pay
#### 700