Alright, let's work through 77790947 times 90796028 step by step
77790947 × 90796028 = 90796028 × (77790947)
+ 90796028 × 7 yielding 635572196
+ 90796028 × 40 resulting in 3631841120
+ 90796028 × 900 that equals 81716425200
+ 90796028 × 0000 that equals 0
+ 90796028 × 90000 that equals 8171642520000
+ 90796028 × 700000 which equals 63557219600000
+ 90796028 × 7000000 that results in 635572196000000
+ 90796028 × 70000000 which equals 6355721960000000

= 7063109001958516
