Alright, let's work through 5747 times 3545 step by step
5747 × 3545 = 3545 × (5747)
+ 3545 × 7 that results in 24815
+ 3545 × 40 what gives us 141800
+ 3545 × 700 which equals 2481500
+ 3545 × 5000 producing 17725000

= 20373115
