Alright, let's work through 78934157 times 37254533 step by step
78934157 × 37254533 = 37254533 × (78934157)
+ 37254533 × 7 which equals 260781731
+ 37254533 × 50 that equals 1862726650
+ 37254533 × 100 producing 3725453300
+ 37254533 × 4000 what gives us 149018132000
+ 37254533 × 30000 that is equal 1117635990000
+ 37254533 × 900000 that equals 33529079700000
+ 37254533 × 8000000 yielding 298036264000000
+ 37254533 × 70000000 which equals 2607817310000000

= 2940655156783681
