Dina has twice as many dolls as Ivy. 2/3 of Ivy's dolls are collectors editions. If Ivy has 20 collectors edition dolls, how many dolls does Dina have?
Ivy has 20/2*3=
<gadget id="calculator">20/2*3</gadget>
<output>30</output>
30 dolls.
Dina has 30*2=
<gadget id="calculator">30*2</gadget>
<output>60</output>
60 dolls.

<result>60</result>