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

### Instruction:
 一根铁棒的尺寸是12厘米 x 8厘米 x 6厘米。一个工厂想要熔化十根铁棒并将它们塑造成铁球。每个铁球的体积是8立方厘米。已经塑造了多少个铁球？


### Response:
 1根铁棒的体积是12厘米 x 8厘米 x 6厘米 = <<12*8*6=576>>576立方厘米。
10根铁棒的体积是10根 x 576立方厘米/根 = <<10*576=5760>>5760立方厘米。
因此，已经塑造了5760立方厘米/8立方厘米 = <<5760/8=720>>720个铁球。