Betty has 3 red beads for every 2 blue beads that she has. How many blue beads does Betty have if she has 30 red beads?
Betty has 30/3 = 
<gadget id="calculator">30/3</gadget>
<output>10</output>
10 sets of 3 red beads.
So, she has 10 x 2 = 
<gadget id="calculator">10*2</gadget>
<output>20</output>
20 blue beads.

<result>20</result>