No problem, we've got 1836 and 5420 to multiply
1836 × 5420 = 5420 × (1836)
+ 5420 × 6 that results in 32520
+ 5420 × 30 producing 162600
+ 5420 × 800 yielding 4336000
+ 5420 × 1000 resulting in 5420000

= 9951120
