John runs 60 miles a week. He runs 3 days a week.  He runs 3 hours the first day and half as much the other two days he runs.  How fast does he run?
He has 7-1=
<gadget id="calculator">7-1</gadget>
<output>6</output>
6 possible running days.
He runs half of those so he runs 6/2=
<gadget id="calculator">6/2</gadget>
<output>3</output>
3 days.
So for two days, he runs 3/2=
<gadget id="calculator">3/2</gadget>
<output>3/2 = around 1.5</output>
1.5 hours.
So in total, he runs 3+1.5+1.5=
<gadget id="calculator">3+1.5+1.5</gadget>
<output>6</output>
6 hours.
So he runs 60/6=
<gadget id="calculator">60/6</gadget>
<output>10</output>
10 mph.

<result>10</result>