Alright, let's work through 66707710 times 85699749 step by step
66707710 × 85699749 = 85699749 × (66707710)
+ 85699749 × 0 which equals 0
+ 85699749 × 10 which equals 856997490
+ 85699749 × 700 that results in 59989824300
+ 85699749 × 7000 what gives us 599898243000
+ 85699749 × 00000 which equals 0
+ 85699749 × 700000 resulting in 59989824300000
+ 85699749 × 6000000 yielding 514198494000000
+ 85699749 × 60000000 yielding 5141984940000000

= 5716834003364790
