Well, . .
Let's divide the gallon into 4 Quarts.
if 1 part cleaner need to be mixed every 3 parts of water, it's means that you need about 1/4 gallon of cleaning solution
hope this helps
It is observed that the human population keep increasing significantly and it began to increase noticeably around 10,000 years ago.The greatest factor of this increase is the rapid development of the agricultures in lands, as well as the domestication of animals. These are the reasons why population increases at that time.