Darwin has 600$. He spent 1/3 of it on gas for his car, and 1/4 of what was left on food. How much money did he have left?
600/3=
<gadget id="calculator">600/3</gadget>
<output>200</output>
200$ for gas.
After buying gas, Darwin has 600-200=
<gadget id="calculator">600-200</gadget>
<output>400</output>
400$ left
400/4=
<gadget id="calculator">400/4</gadget>
<output>100</output>
100$ on food.
Darwin has 400-100=
<gadget id="calculator">400-100</gadget>
<output>300</output>
300$ left.

<result>300</result>