Sahil has a fish tank in the shape of a cuboid, as shown in the diagram. The tank is
55 cm long
28 cm wide
33 cm high
The surface of the water in the tank is 3 cm below the top of the tank.
Sahil is going to put some neon tetra fish in the tank.
He must allow 4 litres of water for each of the neon tetra fish he puts in the tank.
What is the greatest number of neon tetra fish Sahil can put in the tank?