Alright, let's work through 8354242 times 7842208 step by step
8354242 × 7842208 = 7842208 × (8354242)
+ 7842208 × 2 resulting in 15684416
+ 7842208 × 40 giving us 313688320
+ 7842208 × 200 producing 1568441600
+ 7842208 × 4000 resulting in 31368832000
+ 7842208 × 50000 that results in 392110400000
+ 7842208 × 300000 what gives us 2352662400000
+ 7842208 × 8000000 producing 62737664000000

= 65515703446336
