Amanda needs 12 more marbles to have twice as many marbles as Katrina, and Mabel has 5 times as many marbles as Katrina. If Mabel has 85 marbles, how many more marbles does Mabel have than Amanda?
Katrina has 85/5 = 
<gadget id="calculator">85/5</gadget>
<output>17</output>
17 marbles.
Twice as many marbles as Katrina is 17 x 2 = 
<gadget id="calculator">17*2</gadget>
<output>34</output>
34.
Amanda has 34 -12 = 
<gadget id="calculator">34-12</gadget>
<output>22</output>
22 marbles.
Mabel has 85 - 22 = 
<gadget id="calculator">85-22</gadget>
<output>63</output>
63 more marbles than Amanda.

<result>63</result>