Alright, let's work through 69919897 times 66551680 step by step
69919897 × 66551680 = 66551680 × (69919897)
+ 66551680 × 7 that is equal 465861760
+ 66551680 × 90 which equals 5989651200
+ 66551680 × 800 producing 53241344000
+ 66551680 × 9000 that results in 598965120000
+ 66551680 × 10000 giving us 665516800000
+ 66551680 × 900000 that results in 59896512000000
+ 66551680 × 9000000 what gives us 598965120000000
+ 66551680 × 60000000 that results in 3993100800000000

= 4653286610776960
