A store has 89 kilograms of oranges and 161 kilograms of bananas. After selling the same amount of oranges and bananas, the number of oranges is 1/2 less than that of bananas. How many kilograms of bananas are sold?
某商店有桔子89千克，香蕉161千克，卖出同样多的桔子和香蕉后，桔子比香蕉少(1/2)，卖出香蕉多少千克？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">161 * (1/2)</gadget>
<output>161/2 = around 80.5</output>

<gadget id="calculator">89 - 161</gadget>
<output>-72</output>

<gadget id="calculator">(161/2) + (-72)</gadget>
<output>17/2 = around 8.5</output>

<gadget id="calculator">1 - 1</gadget>
<output>0</output>

<gadget id="calculator">(1/2) + 0</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(17/2) / (1/2)</gadget>
<output>17</output>

<result>17</result>