Alright, let's work through 2858 times 1360 step by step
2858 × 1360 = 1360 × (2858)
+ 1360 × 8 resulting in 10880
+ 1360 × 50 that is equal 68000
+ 1360 × 800 giving us 1088000
+ 1360 × 2000 resulting in 2720000

= 3886880
