Alright, let's work through 1870 times 6850 step by step
1870 × 6850 = 6850 × (1870)
+ 6850 × 0 that equals 0
+ 6850 × 70 which equals 479500
+ 6850 × 800 giving us 5480000
+ 6850 × 1000 which equals 6850000

= 12809500
