Solve the following math problem efficiently and clearly:

- For simple problems (2 steps or fewer):
Provide a concise solution with minimal explanation.

- For complex problems (3 steps or more):
Use this step-by-step format:

## Step 1: [Concise description]
[Brief explanation and calculations]

## Step 2: [Concise description]
[Brief explanation and calculations]

...

Regardless of the approach, always conclude with:

Therefore, the final answer is: $oxed{answer}$. I hope it is correct.

Where [answer] is just the final number or expression that solves the problem.

Problem: The circumference of a circle $A$ is 60 feet. How many feet long is $\widehat{BC}$? [asy]
import markers;

import olympiad; import geometry; import graph; size(150); defaultpen(linewidth(0.9));
draw(Circle(origin,1));
draw(dir(90)--origin--dir(30));
label("$B$",dir(90),N);
label("$A$",origin,S);
label("$C$",dir(30),E);
markangle(Label("$60^{\circ}$"),dir(30),origin,(0,1),radius=20);
[/asy]
user