What is the most logical next event?

How to replace a leaky aquarium
Clear the area.
You will need lots of floor space and an easy lift of the old tank.
Drain the tank, leaving about 10%-40% of the water, depending on number of fish and size of your tank and holding buckets.

Available choices:
(A). For every 30 inches (760 mm) of fish no bigger than 7 inches (180 mm) you will need one 5 gallon (20 l) bucket. If this is not available, use anything that won't be too small or have harmful residue in it.;
(B). Measure the tank and remove the pieces that came off. Use a narrow black measuring tape to take all the pieces off, leaving just a 9 " square square at the very bottom of the tank.;
(C). Ensure that all the water is completely drained out, this is vital in removing dirty water from the tank. You will need to remove all the gravel to make room for your new tank.;
(D). Take out the suction cups, always, and set them aside. This step is optional, only takes a few minutes.;
(A).