Let's calculate 77041881 x 80023612
77041881 × 80023612 = 80023612 × (77041881)
+ 80023612 × 1 yielding 80023612
+ 80023612 × 80 which equals 6401888960
+ 80023612 × 800 producing 64018889600
+ 80023612 × 1000 giving us 80023612000
+ 80023612 × 40000 that equals 3200944480000
+ 80023612 × 000000 giving us 0
+ 80023612 × 7000000 which equals 560165284000000
+ 80023612 × 70000000 resulting in 5601652840000000

= 6165169592894172
