No problem, we've got 89844764 and 99487518 to multiply
89844764 × 99487518 = 99487518 × (89844764)
+ 99487518 × 4 producing 397950072
+ 99487518 × 60 producing 5969251080
+ 99487518 × 700 what gives us 69641262600
+ 99487518 × 4000 that results in 397950072000
+ 99487518 × 40000 producing 3979500720000
+ 99487518 × 800000 resulting in 79590014400000
+ 99487518 × 9000000 resulting in 895387662000000
+ 99487518 × 80000000 that equals 7959001440000000

= 8938432575655752
