A and B both have 10 yuan, how much money does A give B to make B have 50% more money than A.
甲和乙都有10元钱，甲给乙多少元钱后，才能使乙的钱数比甲多50%．
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">10 * (1/2)</gadget>
<output>5</output>

<gadget id="calculator">5 - 10</gadget>
<output>-5</output>

<gadget id="calculator">10 + (-5)</gadget>
<output>5</output>

<gadget id="calculator">1 + (1/2) + 1</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">5 / (5/2)</gadget>
<output>2</output>

<result>2</result>