Alright, let's work through 9807 times 7910 step by step
9807 × 7910 = 7910 × (9807)
+ 7910 × 7 yielding 55370
+ 7910 × 00 what gives us 0
+ 7910 × 800 that results in 6328000
+ 7910 × 9000 resulting in 71190000

= 77573370
