Please reckon up how much I must pay.

请你算一算我该付多少钱?

《新英汉大辞典》

Reckon up all your money and see if you have enough.

估算一下你一共有多少钱，看是否已经足够了。

《新英汉大辞典》

We had to reckon up the gains as well as the losses.

他们好不容易才做到得失相当。

youdao

"I reckon if you give me until tomorrow," Ransie pleaded, "I might be able to scrape it up somewhere.

VOA: special.2009.11.14

"I reckon you'll be goin' back up to the cabin, along with the cart," said Ariela.

VOA: special.2009.11.14

That ain't much, but I reckon that'll get me up to brother Ed's."

VOA: special.2009.11.14

Hardline governments, they reckon, end up helping their cause by driving even moderate Tamils into their clutches.

ECONOMIST: Sri Lanka

Privately her political opponents reckon she comes up with half decent questions.

BBC: FMQs is back. Oh yes it is.

Many lenders reckon they will end up making a return on equity in the low teens, above their cost of capital.

ECONOMIST: Bank regulations