Alright, let's work through 7090 times 9728 step by step
7090 × 9728 = 9728 × (7090)
+ 9728 × 0 that equals 0
+ 9728 × 90 which equals 875520
+ 9728 × 000 that equals 0
+ 9728 × 7000 producing 68096000

= 68971520
