Alright, let's work through 1672 times 7610 step by step
1672 × 7610 = 7610 × (1672)
+ 7610 × 2 which equals 15220
+ 7610 × 70 that equals 532700
+ 7610 × 600 which equals 4566000
+ 7610 × 1000 that equals 7610000

= 12723920
