Alright, let's work through 9712 times 7812 step by step
9712 × 7812 = 7812 × (9712)
+ 7812 × 2 that results in 15624
+ 7812 × 10 that equals 78120
+ 7812 × 700 resulting in 5468400
+ 7812 × 9000 giving us 70308000

= 75870144
