Alright, let's work through 7771 times 1129 step by step
7771 × 1129 = 1129 × (7771)
+ 1129 × 1 giving us 1129
+ 1129 × 70 what gives us 79030
+ 1129 × 700 that equals 790300
+ 1129 × 7000 that results in 7903000

= 8773459
