Alright, let's work through 9720 times 6817 step by step
9720 × 6817 = 6817 × (9720)
+ 6817 × 0 resulting in 0
+ 6817 × 20 yielding 136340
+ 6817 × 700 which equals 4771900
+ 6817 × 9000 that equals 61353000

= 66261240
