Basic arithmetic could be done with an abax.

They stayed up late hashing out the details of the contract.

This is but Tit for Tat, young Gentleman. Your Father wanted to get my Eſtate from me; and I have got the Wife he intended for you. All's fair, Sir.

The Ember-days are periodical fasts originally instituted, it is said, by Pope Calixtus, in the third century, for the purpose of imploring the blessing of Heaven on the produce of the earth; and also preparing the clergy for ordination, in imitation of the apostolic practice recorded in the 13th chapter of the Acts.