Below is an instruction that describes a task. Write a response that appropriately completes the request in French. Please answer in French.

### Instruction:
 William read 6 books last month and Brad read thrice as many books as William did. This month, in an effort to catch up, Williams read twice as much as Brad, who read 8 books. Who has read more across the two months, and by how much?


### Response:
 Le premier mois, William a lu 6 livres et Brad a lu 3*6 = 18 livres.
Le deuxième mois, William a lu 2*18 = 36 livres et Brad a lu 8 livres.
William a lu un total de 6+36 = 42 livres, et Brad a lu un total de 18+8 = 26 livres.
William a lu plus que Brad, de 42-26 = 16 livres.