Question 714437
I believe your formula is {{{1/(2pi*(A/B)*C*0.000001)=D }}}
 
In general, to get rid of a denominator, you can just multiply both sides of the equal sign times that denominator.
Multiplying both sides of the equal sign times that {{{(2pi*(A/B)*C*0.000001)}}} denominator we get
{{{1=2pi*(A/B)*C*0.000001*D}}} --> {{{1=0.000002pi*(A/B)*C*D}}}
Dividing both sides by {{{(0.000002pi*C*D)}}} we get
{{{1/(0.000002pi*C*D)=A/B}}} <--> {{{0.000002pi*C*D=B/A}}} and
{{{B/(0.000002pi*C*D)=A}}} and {{{0.000002pi*C*D*A=B}}}

In this case, since you are interested in A and B,you could just multiply both sides times {{{A/B}}} to get directly to
{{{1/(0.000002pi*C*D)=A/B}}}
 
NOTE:
Your expression had three "(" and two ")" , but I  only realized because the website told me I had mismatched parentheses when I copied your formula.
Two and two would have been enough, as in 1/(2*pi*(A/B)*C*0.000001)=D