No problem, we've got 1821 and 1296 to multiply
1821 × 1296 = 1296 × (1821)
+ 1296 × 1 resulting in 1296
+ 1296 × 20 giving us 25920
+ 1296 × 800 what gives us 1036800
+ 1296 × 1000 what gives us 1296000

= 2360016
