No problem, we've got 71398894 and 82868543 to multiply
71398894 × 82868543 = 82868543 × (71398894)
+ 82868543 × 4 which equals 331474172
+ 82868543 × 90 which equals 7458168870
+ 82868543 × 800 giving us 66294834400
+ 82868543 × 8000 resulting in 662948344000
+ 82868543 × 90000 giving us 7458168870000
+ 82868543 × 300000 that equals 24860562900000
+ 82868543 × 1000000 which equals 82868543000000
+ 82868543 × 70000000 what gives us 5800798010000000

= 5916722317591442
