Alright, let's work through 3129 times 8709 step by step
3129 × 8709 = 8709 × (3129)
+ 8709 × 9 which equals 78381
+ 8709 × 20 giving us 174180
+ 8709 × 100 which equals 870900
+ 8709 × 3000 that equals 26127000

= 27250461
