No problem, we've got 72719471 and 90378979 to multiply
72719471 × 90378979 = 90378979 × (72719471)
+ 90378979 × 1 that equals 90378979
+ 90378979 × 70 which equals 6326528530
+ 90378979 × 400 giving us 36151591600
+ 90378979 × 9000 giving us 813410811000
+ 90378979 × 10000 resulting in 903789790000
+ 90378979 × 700000 that results in 63265285300000
+ 90378979 × 2000000 giving us 180757958000000
+ 90378979 × 70000000 yielding 6326528530000000

= 6572311542400109
