Alright, let's work through 65443143 times 66013029 step by step
65443143 × 66013029 = 66013029 × (65443143)
+ 66013029 × 3 resulting in 198039087
+ 66013029 × 40 giving us 2640521160
+ 66013029 × 100 what gives us 6601302900
+ 66013029 × 3000 which equals 198039087000
+ 66013029 × 40000 that results in 2640521160000
+ 66013029 × 400000 yielding 26405211600000
+ 66013029 × 5000000 yielding 330065145000000
+ 66013029 × 60000000 that equals 3960781740000000

= 4320100096710147
