5.5
148
Divide 2200 by 400 = 5.5
100
0.0014
0.0009
314.2857
12.2222
0.0068
2200/400 = 5.5 cans
73.3333
1 can covers 400 units^2 (i assume you meant square units), so That is 400 sq.units/can. Divide (2200 sq.unit)/(400 sq.unit/can) = 5.5 cans.
they can carry 2200