calculation

我快速计算了一下，看看我们是否负担得起。

I did a quick ___calculation to see if we could afford it.

工程师为桥梁设计做了一个精确的计算。

The engineer made a precise ___calculation for the bridge design.

工程师的计算显示桥梁可以承受这个重量。

The engineer's ___calculation showed that the bridge could support the weight.