Alright, let's work through 9801423 times 73007518 step by step
9801423 × 73007518 = 73007518 × (9801423)
+ 73007518 × 3 yielding 219022554
+ 73007518 × 20 that results in 1460150360
+ 73007518 × 400 that results in 29203007200
+ 73007518 × 1000 which equals 73007518000
+ 73007518 × 00000 that results in 0
+ 73007518 × 800000 yielding 58406014400000
+ 73007518 × 9000000 giving us 657067662000000

= 715577566098114
