No problem, we've got 7800 and 3684 to multiply
7800 × 3684 = 3684 × (7800)
+ 3684 × 0 giving us 0
+ 3684 × 00 giving us 0
+ 3684 × 800 that equals 2947200
+ 3684 × 7000 resulting in 25788000

= 28735200
