Alright, let's work through 6146 times 6545 step by step
6146 × 6545 = 6545 × (6146)
+ 6545 × 6 that results in 39270
+ 6545 × 40 what gives us 261800
+ 6545 × 100 what gives us 654500
+ 6545 × 6000 that equals 39270000

= 40225570
