Alright, let's work through 2664407 times 78931086 step by step
2664407 × 78931086 = 78931086 × (2664407)
+ 78931086 × 7 giving us 552517602
+ 78931086 × 00 giving us 0
+ 78931086 × 400 producing 31572434400
+ 78931086 × 4000 giving us 315724344000
+ 78931086 × 60000 which equals 4735865160000
+ 78931086 × 600000 producing 47358651600000
+ 78931086 × 2000000 that results in 157862172000000

= 210304538056002
