Rey works at the local pet store and is filling the fish tanks with water. The dimensions of each fish tank are shown below. Before the store opens for the day, Rey must fill 6 tanks. Write an equation to determine the amount of water she will use to fill the tanks. Use $\mathrm{V}$ for the variable.

Step 1 ：Rey works at the local pet store and is filling the fish tanks with water. The dimensions of each fish tank are shown below.

Step 2 ：Before the store opens for the day, Rey must fill 6 tanks. We need to write an equation to determine the amount of water she will use to fill the tanks. We use \(V\) for the variable.

Step 3 ：The equation to determine the amount of water Rey will use to fill the tanks is \(\boxed{6V}\).