No problem, we've got 4152 and 2160 to multiply
4152 × 2160 = 2160 × (4152)
+ 2160 × 2 that equals 4320
+ 2160 × 50 that is equal 108000
+ 2160 × 100 what gives us 216000
+ 2160 × 4000 which equals 8640000

= 8968320
