No problem, we've got 7152 and 3900 to multiply
7152 × 3900 = 3900 × (7152)
+ 3900 × 2 that is equal 7800
+ 3900 × 50 what gives us 195000
+ 3900 × 100 what gives us 390000
+ 3900 × 7000 yielding 27300000

= 27892800
