If you add 25 g of food in 225 ml water, after mixing well, I ml is taken and added to 10 ml of water then a dilution of 1:9 (ratio 1 to 9) is made then 5 ml is added to 50 ml of water. Finally, 1 ml from this last dilution is plated. After incubation, 143 colonies are counted. What is the total count per g of the original sample? Show your calculations in details