No problem, we've got 1527 and 840 to multiply
1527 × 840 = 840 × (1527)
+ 840 × 7 that results in 5880
+ 840 × 20 yielding 16800
+ 840 × 500 what gives us 420000
+ 840 × 1000 that equals 840000

= 1282680
