Alright, let's work through 66896891 times 23788741 step by step
66896891 × 23788741 = 23788741 × (66896891)
+ 23788741 × 1 that equals 23788741
+ 23788741 × 90 giving us 2140986690
+ 23788741 × 800 that is equal 19030992800
+ 23788741 × 6000 which equals 142732446000
+ 23788741 × 90000 that results in 2140986690000
+ 23788741 × 800000 that equals 19030992800000
+ 23788741 × 6000000 that results in 142732446000000
+ 23788741 × 60000000 yielding 1427324460000000

= 1591392813704231
