Alright, let's work through 89378440 times 60851541 step by step
89378440 × 60851541 = 60851541 × (89378440)
+ 60851541 × 0 that equals 0
+ 60851541 × 40 giving us 2434061640
+ 60851541 × 400 that equals 24340616400
+ 60851541 × 8000 giving us 486812328000
+ 60851541 × 70000 which equals 4259607870000
+ 60851541 × 300000 resulting in 18255462300000
+ 60851541 × 9000000 which equals 547663869000000
+ 60851541 × 80000000 resulting in 4868123280000000

= 5438815806176040
