I need help on this it is really hard to understand

Answer:
Step-by-step explanation:
Row 1
Total = $3,440
Average = $688
Row 2
Total = $5,911.70
Average = $1,182.34
Row 3
Total = $8,802.34
Average = $1,760.47
Row 4
Sept. = $108.26
Total = $545.45
Row 5
Sept. = $19,892.25
Total = $108,017.60