Alright, let's work through 12920971 times 79915966 step by step
12920971 × 79915966 = 79915966 × (12920971)
+ 79915966 × 1 resulting in 79915966
+ 79915966 × 70 yielding 5594117620
+ 79915966 × 900 which equals 71924369400
+ 79915966 × 0000 that is equal 0
+ 79915966 × 20000 giving us 1598319320000
+ 79915966 × 900000 yielding 71924369400000
+ 79915966 × 2000000 what gives us 159831932000000
+ 79915966 × 10000000 giving us 799159660000000

= 1032591879122986
