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

### Instruction:
 Rocco把他的硬币分成每堆10个硬币。他有4堆25美分的硬币，6堆10美分的硬币，9堆5美分的硬币和5堆1美分的硬币。Rocco有多少钱？


### Response:
 每堆有10个硬币，所以他有：
10 * 4 * $0.25 = $<<10*4*0.25=10.00>>10.00的25美分硬币，
10 * 6 * $0.10 = $<<10*6*0.10=6.00>>6.00的10美分硬币，
10 * 9 * $0.05 = $<<10*9*0.05=4.50>>4.50的5美分硬币，和
10 * 5 * $0.01 = $<<10*5*0.01=0.50>>0.50的1美分硬币。
总共他有$10.00 + $6.00 + $4.50 + $0.50 = $<<10+6+4.5+0.5=21.00>>21.00。