Alright, let's work through 66847750 times 87765451 step by step
66847750 × 87765451 = 87765451 × (66847750)
+ 87765451 × 0 producing 0
+ 87765451 × 50 that equals 4388272550
+ 87765451 × 700 that is equal 61435815700
+ 87765451 × 7000 resulting in 614358157000
+ 87765451 × 40000 which equals 3510618040000
+ 87765451 × 800000 resulting in 70212360800000
+ 87765451 × 6000000 that equals 526592706000000
+ 87765451 × 60000000 producing 5265927060000000

= 5866922927085250
