Where does the first digit in the quotient 1881/9 go? i have a feeling it's in the hundred but, just to make sure.

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.