No problem, we've got 80248178 and 13580316 to multiply
80248178 × 13580316 = 13580316 × (80248178)
+ 13580316 × 8 resulting in 108642528
+ 13580316 × 70 producing 950622120
+ 13580316 × 100 what gives us 1358031600
+ 13580316 × 8000 resulting in 108642528000
+ 13580316 × 40000 which equals 543212640000
+ 13580316 × 200000 producing 2716063200000
+ 13580316 × 0000000 giving us 0
+ 13580316 × 80000000 giving us 1086425280000000

= 1089795615664248
