No problem, we've got 4360 and 7800 to multiply
4360 × 7800 = 7800 × (4360)
+ 7800 × 0 which equals 0
+ 7800 × 60 that equals 468000
+ 7800 × 300 producing 2340000
+ 7800 × 4000 what gives us 31200000

= 34008000
