8.333...
6.5
4.3333
1.0833
26.6667
0.2308
Add all the numbers up. Divide the answer you get by the amount of numbers there are. Viola! You have the average! E.g. Average of: 7, 3, 4, 6, 6. 7+3+4+6+6 = 26 26 divided by 5 (because that's how many numbers there are) = 5.2 5.2 is your average :)
25
156 divided 26 = 6
0.2308
290 x 8 = 2320 2320 divided by 6 = 386.67 386.67 + 4 = 390.67 So the answer is 390.67
2.6
19.2308