Answer :
37000 letters were written in all. The reason for this is because to solve this you would do 940x40 which gets you to 37000.
Answer:
37,600
Step-by-step explanation:
You have to multiply 940 and 40 because your trying to figure out the total amount of letters that were written.
940 x 40 = 37,600
you can also check your work by dividing 37,600 by any of those numbers or multiplying just to make sure.