A 435 gal tank of water drains at a flow rate of 2.6417 gal/min into a empty tank. This tank drains at 1.7895 gal/min into another empty tank. This process is repeated for 3 additional empty tanks draining at 1.1374 , 0.25361, 2.02737 gal/min respectively and 2.58168 gal/min draining out of the final tank. How long will it take for all of the 435 gal of water to drain from the original tank to out of the final tank?