639 metric teaspoons in dry gallons

Conversion formula
How to convert 639 metric teaspoons to dry gallons?

We know (by definition) that: $1\mathrm{brteaspoon}\approx 0.00113510373033607\mathrm{drygallon}$

We can set up a proportion to solve for the number of dry gallons.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 639 ⁢ brteaspoon ≈ 0.7253312836847488 ⁢ drygallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 dry gallon is equal to 1.37868036646635 times 639 metric teaspoons.

It can also be expressed as: 639 metric teaspoons is equal to $\frac{1}{\mathrm{1.37868036646635}}$ dry gallons.

Approximation

An approximate numerical result would be: six hundred and thirty-nine metric teaspoons is about zero point seven three dry gallons, or alternatively, a dry gallon is about one point three seven times six hundred and thirty-nine metric teaspoons.