685 imperial cups in US customary teaspoons

Conversion formula
How to convert 685 imperial cups to US customary teaspoons?

We know (by definition) that: $1\mathrm{brcup}\approx 57.645596424233\mathrm{usteaspoon}$

We can set up a proportion to solve for the number of US customary teaspoons.

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

Conclusion: 685 ⁢ brcup ≈ 39487.2335505996 ⁢ usteaspoon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary teaspoon is equal to 2.53246406517332e-05 times 685 imperial cups.

It can also be expressed as: 685 imperial cups is equal to $\frac{1}{\mathrm{2.53246406517332e-05}}$ US customary teaspoons.

Approximation

An approximate numerical result would be: six hundred and eighty-five imperial cups is about thirty-nine thousand, four hundred and eighty-seven point two three US customary teaspoons, or alternatively, a US customary teaspoon is about zero times six hundred and eighty-five imperial cups.