It takes 3 minutes to saw a piece of wood into two pieces. The master carpenter takes 18 minutes to cut such a 6-meter-long piece of wood into equal small pieces. The length of each piece is the total length.
把一根木料锯成两段需要用时3分，木工师傅用18分把这样的一根长6米的木料截成了相等的小段，每段的长度是全长的多少．
<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>