Alright, let's work through 7830 times 129 step by step
7830 × 129 = 129 × (7830)
+ 129 × 0 what gives us 0
+ 129 × 30 giving us 3870
+ 129 × 800 that equals 103200
+ 129 × 7000 resulting in 903000

= 1010070
