Alright, let's work through 70916217 times 71768978 step by step
70916217 × 71768978 = 71768978 × (70916217)
+ 71768978 × 7 giving us 502382846
+ 71768978 × 10 what gives us 717689780
+ 71768978 × 200 which equals 14353795600
+ 71768978 × 6000 giving us 430613868000
+ 71768978 × 10000 which equals 717689780000
+ 71768978 × 900000 resulting in 64592080200000
+ 71768978 × 0000000 producing 0
+ 71768978 × 70000000 producing 5023828460000000

= 5089584417716226
