Alright, let's work through 2157 times 722 step by step
2157 × 722 = 722 × (2157)
+ 722 × 7 yielding 5054
+ 722 × 50 that equals 36100
+ 722 × 100 resulting in 72200
+ 722 × 2000 resulting in 1444000

= 1557354
