No problem, we've got 1836 and 8399 to multiply
1836 × 8399 = 8399 × (1836)
+ 8399 × 6 that is equal 50394
+ 8399 × 30 which equals 251970
+ 8399 × 800 that results in 6719200
+ 8399 × 1000 resulting in 8399000

= 15420564
