Alright, let's work through 87842822 times 77702307 step by step
87842822 × 77702307 = 77702307 × (87842822)
+ 77702307 × 2 giving us 155404614
+ 77702307 × 20 producing 1554046140
+ 77702307 × 800 producing 62161845600
+ 77702307 × 2000 that equals 155404614000
+ 77702307 × 40000 that equals 3108092280000
+ 77702307 × 800000 giving us 62161845600000
+ 77702307 × 7000000 what gives us 543916149000000
+ 77702307 × 80000000 producing 6216184560000000

= 6825589922790354
