The question relates to a mathematics problem, but it lacks sufficient information to solve for '4B'.
'B' needs to be a known number or variable with a given value for us to calculate '4B'.
The question 'Find 4B' appears to be a mathematics problem involving algebra or arithmetic operations.
However, the information provided is incomplete.
To solve for '4B', we would need to know what 'B' represents.
If 'B' is a variable representing a known number, then you simply multiply that number by 4 to find the solution.
If this is an algebraic expression and you are given a value for 'B', substitute that value into the expression and carry out the multiplication.
Without additional context or information, we cannot provide a numerical answer to this question.