Let's calculate 2679 x 2560
2679 × 2560 = 2560 × (2679)
+ 2560 × 9 what gives us 23040
+ 2560 × 70 that equals 179200
+ 2560 × 600 that results in 1536000
+ 2560 × 2000 that equals 5120000

= 6858240
