It takes (4/5) hours to cut a piece of wood into 5 sections. If the time is the same each time, then it needs to be cut into 10 sections. How many hours will it take in total?
一根木料，用(4/5)小时截成5段，若每次用时相同，那么要截成10段，共要多少小时．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">(4/5) / 4</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">(1/5) * 9</gadget>
<output>9/5 = around 1.8</output>

<result>9/5 = around 1.8</result>