Alright, let's work through 7129 times 8947 step by step
7129 × 8947 = 8947 × (7129)
+ 8947 × 9 resulting in 80523
+ 8947 × 20 what gives us 178940
+ 8947 × 100 producing 894700
+ 8947 × 7000 producing 62629000

= 63783163
