No problem, we've got 4800 and 3904 to multiply
4800 × 3904 = 3904 × (4800)
+ 3904 × 0 giving us 0
+ 3904 × 00 yielding 0
+ 3904 × 800 giving us 3123200
+ 3904 × 4000 that equals 15616000

= 18739200
