The older sister has 300 yuan. If the older sister gives (1/10) to the younger brother, the siblings will have the same amount of money. Ask how much the siblings have in total?
姐姐有300元钱，如果姐姐拿出(1/10)给弟弟，姐弟俩的钱就一样多了．问姐弟共有多少元？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">300 * (1/10)</gadget>
<output>30</output>

<gadget id="calculator">300 - 30 - 30</gadget>
<output>240</output>

<gadget id="calculator">240 + 300</gadget>
<output>540</output>

<result>540</result>