person needs to drink at least 1.413 liters of water a day. Now there are large and small cylindrical cups. It is known that the diameter of the bottom of the small cup is 6 cm and the height is 10 cm. Fill the small cup with water and pour it into the large cup, accounting for 100% of the large cup. (3/5). If you drink from a large cup, how many cups should you drink at least a day?
一个人一天最少要喝1.413升水，现在有大小圆柱形的杯子各一个，已知小杯的底面直径是6厘米，高是10厘米，小杯装满水倒入大杯里，占大杯的(3/5)．如果用大杯来喝，一天至少要喝几杯？
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">10 / (3/5) / 1_000</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">3.14 * 9 * (1/60)</gadget>
<output>0.471</output>

<gadget id="calculator">1.413 / 0.471</gadget>
<output>3</output>

<result>3</result>