It takes (9/10) minutes to saw a piece of wood into two pieces, how long will it take to saw it into 11 pieces now? (It takes the same amount of time to saw wood each time)
一根木头锯成两段要用(9/10)分钟，现在要将它锯成11段，需要多长时间？(每次锯木头需要的时间相同)
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">(9/10) / 1</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">11 - 1</gadget>
<output>10</output>

<gadget id="calculator">(9/10) * 10</gadget>
<output>9</output>

<result>9</result>