Alright, let's work through 3157 times 7258 step by step
3157 × 7258 = 7258 × (3157)
+ 7258 × 7 that is equal 50806
+ 7258 × 50 resulting in 362900
+ 7258 × 100 which equals 725800
+ 7258 × 3000 that equals 21774000

= 22913506
