No problem, we've got 4084 and 8430 to multiply
4084 × 8430 = 8430 × (4084)
+ 8430 × 4 giving us 33720
+ 8430 × 80 that equals 674400
+ 8430 × 000 what gives us 0
+ 8430 × 4000 what gives us 33720000

= 34428120
