John climbs up 3 flights of stairs.  Each flight is 10 feet.  He then climbs a rope that is half that height.  Finally, he climbs a ladder that is 10 feet longer than the rope.  How high up did he go?
He climbed 3*10=
<gadget id="calculator">3*10</gadget>
<output>30</output>
30 feet of stairs.
He then climbed 30/2=
<gadget id="calculator">30/2</gadget>
<output>15</output>
15 feet of rope.
Finally, he climbed a 15+10=
<gadget id="calculator">15+10</gadget>
<output>25</output>
25 foot ladder.
So in total, he climbed 30+15+25=
<gadget id="calculator">30+15+25</gadget>
<output>70</output>
70 feet.

<result>70</result>