No problem, we've got 2040 and 3578 to multiply
2040 × 3578 = 3578 × (2040)
+ 3578 × 0 which equals 0
+ 3578 × 40 that is equal 143120
+ 3578 × 000 what gives us 0
+ 3578 × 2000 that results in 7156000

= 7299120
