Joseph had 3 times as many notebooks as Martha. Martha decided she needed more notebooks and then bought 5 more for a total of 7 notebooks. How many more than Joseph does she now have?
Since she bought 5 more to have 7, she originally had 7-5 = 
<gadget id="calculator">7-5</gadget>
<output>2</output>
2 notebooks.
Joseph had 3 times Martha's number of notebooks which is 3*2 = 
<gadget id="calculator">3*2</gadget>
<output>6</output>
6 notebooks.
Martha has 7 notebooks now which is 7-6 = 
<gadget id="calculator">7-6</gadget>
<output>1</output>
1 more than Joseph.

<result>1</result>