No problem, we've got 7520 and 684 to multiply
7520 × 684 = 684 × (7520)
+ 684 × 0 what gives us 0
+ 684 × 20 giving us 13680
+ 684 × 500 giving us 342000
+ 684 × 7000 what gives us 4788000

= 5143680
