No problem, we've got 2152 and 9840 to multiply
2152 × 9840 = 9840 × (2152)
+ 9840 × 2 which equals 19680
+ 9840 × 50 yielding 492000
+ 9840 × 100 that results in 984000
+ 9840 × 2000 resulting in 19680000

= 21175680
