420 US tablespoons in imperial cups

Conversion formula
How to convert 420 US tablespoons to imperial cups?

We know (by definition) that: $1\mathrm{ustablespoon}\approx 0.0520421365393118\mathrm{brcup}$

We can set up a proportion to solve for the number of imperial cups.

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

Conclusion: 420 ⁢ ustablespoon ≈ 21.857697346510957 ⁢ brcup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial cup is equal to 0.0457504733525659 times 420 US tablespoons.

It can also be expressed as: 420 US tablespoons is equal to $\frac{1}{\mathrm{0.0457504733525659}}$ imperial cups.

Approximation

An approximate numerical result would be: four hundred and twenty US tablespoons is about twenty-one point eight five imperial cups, or alternatively, a imperial cup is about zero point zero five times four hundred and twenty US tablespoons.