Mr. Champion's Math Challenge #2 (June 22nd - June 29th)

Here is the problem for this week. Sorry it took me so long to post it. Just do your best to solve it and then email with me with the answer and an explanation of how you solved it. You may email me at championmathchallenge@yahoo.com. Good luck.

Problem: 
Mr. Champion went running three days in a row. The first day he burned 618 calories. The second day he burned half as much as the first day. On the third day he burned 7 times as many as the second day. If he loses a milligram (mg) for every 6 calories burned, how many milligrams did he lose in those three days?