Alright, let's work through 77539766 times 78623229 step by step
77539766 × 78623229 = 78623229 × (77539766)
+ 78623229 × 6 that equals 471739374
+ 78623229 × 60 giving us 4717393740
+ 78623229 × 700 that equals 55036260300
+ 78623229 × 9000 which equals 707609061000
+ 78623229 × 30000 what gives us 2358696870000
+ 78623229 × 500000 producing 39311614500000
+ 78623229 × 7000000 that results in 550362603000000
+ 78623229 × 70000000 giving us 5503626030000000

= 6096426778824414
