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

### Instruction:
 加里有30克金子，每克15美元。安娜有50克金子，每克20美元。他们的金子总共价值多少钱？


### Response:
 加里的金子价值30 * 15 = $<<30*15=450>>450。
安娜的金子价值50 * 20 = $<<50*20=1000>>1000。
他们的金子总共价值450 + 1000 = $1450。