Alright, let's work through 2151 times 7150 step by step
2151 × 7150 = 7150 × (2151)
+ 7150 × 1 what gives us 7150
+ 7150 × 50 which equals 357500
+ 7150 × 100 that is equal 715000
+ 7150 × 2000 yielding 14300000

= 15379650
