[hé ji]

She thought the matter over and over all day.
她一天到晚心里老合計這件事。

Let's put our heads together and decide how the problem is to be tackled.
大家合計合計這個問題該怎么處理。

[hé jì]

The cost of the building amounts to 10000 yuan.
這屋的造價合計一萬元。

The visitors totaled 1000.
參觀者合計一千人。

Add up the figures in this column.
把這一欄的數(shù)字合計一下。