Roger bought a house for $100,000.  He was able to pay 20% down, and his parents paid off an additional 30% of the remaining balance.  How much money does Roger still owe on his house?
100000(.20)=20000$ down payment
100000-20000=$
<gadget id="calculator">100000-20000</gadget>
<output>80_000</output>
80000 remaining
80000(.30)=24000
80000-24000=
<gadget id="calculator">80000-24000</gadget>
<output>56_000</output>
56000$

<result>56_000</result>