Alright, let's work through 6561 times 6135 step by step
6561 × 6135 = 6135 × (6561)
+ 6135 × 1 giving us 6135
+ 6135 × 60 resulting in 368100
+ 6135 × 500 what gives us 3067500
+ 6135 × 6000 that results in 36810000

= 40251735
