How to convert 423 US quarts to US customary teaspoons?
We know (by definition) that:
We can set up a proportion to solve for the number of US customary teaspoons.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 US customary teaspoon is equal to 1.23128447596533e-05 times 423 US quarts.
It can also be expressed as: 423 US quarts is equal to US customary teaspoons.
An approximate numerical result would be: four hundred and twenty-three US quarts is about eighty-one thousand, two hundred and sixteen US customary teaspoons, or alternatively, a US customary teaspoon is about zero times four hundred and twenty-three US quarts.
 The precision is 15 significant digits (fourteen digits to the right of the decimal point).Results may contain small errors due to the use of floating point arithmetic.