Alright, let's work through 78879739 times 40227786 step by step
78879739 × 40227786 = 40227786 × (78879739)
+ 40227786 × 9 what gives us 362050074
+ 40227786 × 30 producing 1206833580
+ 40227786 × 700 producing 28159450200
+ 40227786 × 9000 what gives us 362050074000
+ 40227786 × 70000 giving us 2815945020000
+ 40227786 × 800000 giving us 32182228800000
+ 40227786 × 8000000 what gives us 321822288000000
+ 40227786 × 70000000 that is equal 2815945020000000

= 3173157260227854
