The working efficiency ratio of A and B is 6:5. They jointly make a batch of 880 parts. How many fewer parts does B make than A?
甲与乙的工作效率比是6：5，两人合做一批零件共计880个，乙比甲少做多少个
<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">(6/11) - (5/11)</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">880 * (1/11)</gadget>
<output>80</output>

<result>80</result>