No problem, we've got 9135 and 7836 to multiply
9135 × 7836 = 7836 × (9135)
+ 7836 × 5 what gives us 39180
+ 7836 × 30 giving us 235080
+ 7836 × 100 which equals 783600
+ 7836 × 9000 that results in 70524000

= 71581860
