This past weekend I bought 3 baskets of peaches at the farmer's market.  I love peaches and decided to can most of the peaches so that I can enjoy them this winter.  From each basket of peaches, I was able to can 7 quarts of peaches. How many quarts of peaches did I can altogether?  

Show your work.

For 4th and 5th graders:  Each basket of peaches contained about 40 peaches.  About how many peaches did I put in each jar?  (You will need to estimate).