No problem, we've got 99738829 and 7239077 to multiply
99738829 × 7239077 = 7239077 × (99738829)
+ 7239077 × 9 what gives us 65151693
+ 7239077 × 20 resulting in 144781540
+ 7239077 × 800 producing 5791261600
+ 7239077 × 8000 that results in 57912616000
+ 7239077 × 30000 that equals 217172310000
+ 7239077 × 700000 resulting in 5067353900000
+ 7239077 × 9000000 producing 65151693000000
+ 7239077 × 90000000 what gives us 651516930000000

= 722017063020833
