Let's think over the problem to see who can work it out first.

我们认真考虑一下这个问题 看谁能第一个解决它

I can't work it out in my head —I need a calculator.

我没法心算出来—我得用计算器。

Asked what she meant, she said mysteriously: "Work it out for yourself."

当被问及她什么意思时，她诡秘地说：“你自己想想吧。”

I don't believe your situation is as hopeless as you think. If you love each other, you'll work it out.

我不相信你的情形像你想的那样无望。如果你们相爱，你们会找到解决办法的。

Can't we work it out?

我们不能解决吗？

However difficult it might be, I will try my best to work it out.

不管有多困难，我都会尽力解决。