How to convert 669 US customary teaspoons to dry gallons?
We know (by definition) that:
We can set up a proportion to solve for the number of dry gallons.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 dry gallon is equal to 1.3358460971017 times 669 US customary teaspoons.
It can also be expressed as: 669 US customary teaspoons is equal to dry gallons.
An approximate numerical result would be: six hundred and sixty-nine US customary teaspoons is about zero point seven five dry gallons, or alternatively, a dry gallon is about one point three four times six hundred and sixty-nine US customary teaspoons.
 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.