Alright, let's work through 78869361 times 62693021 step by step
78869361 × 62693021 = 62693021 × (78869361)
+ 62693021 × 1 resulting in 62693021
+ 62693021 × 60 that equals 3761581260
+ 62693021 × 300 yielding 18807906300
+ 62693021 × 9000 that results in 564237189000
+ 62693021 × 60000 giving us 3761581260000
+ 62693021 × 800000 that is equal 50154416800000
+ 62693021 × 8000000 that is equal 501544168000000
+ 62693021 × 70000000 that results in 4388511470000000

= 4944558505429581
