423l/hour = ml/week

To convert 423 liters per hour to milliliters per week, we need to consider the number of hours in a week.

There are 24 hours in a day, and 7 days in a week.

So, there are 24 * 7 = 168 hours in a week.

To convert liters to milliliters, we multiply by 1000 because there are 1000 milliliters in a liter.

Therefore, to convert 423 liters per hour to milliliters per week, we multiply by 1000 and then by 168:

423 liters/hour * 1000 milliliters/liter * 168 hours/week = 71,064,000 milliliters/week