No problem, we've got 7740 and 2043 to multiply
7740 × 2043 = 2043 × (7740)
+ 2043 × 0 what gives us 0
+ 2043 × 40 that results in 81720
+ 2043 × 700 giving us 1430100
+ 2043 × 7000 which equals 14301000

= 15812820
