Alright, let's work through 40015210 times 87294307 step by step
40015210 × 87294307 = 87294307 × (40015210)
+ 87294307 × 0 producing 0
+ 87294307 × 10 that equals 872943070
+ 87294307 × 200 that equals 17458861400
+ 87294307 × 5000 giving us 436471535000
+ 87294307 × 10000 giving us 872943070000
+ 87294307 × 000000 yielding 0
+ 87294307 × 0000000 that equals 0
+ 87294307 × 40000000 what gives us 3491772280000000

= 3493100026409470
