There are cylindrical containers A and B with inner radii of 1 cm and 4 cm respectively and equal depth. Fill container A with water and pour it into container B. The depth of water is 3 times lower than (3/4) of the depth of the container. cm, what is the depth of the container in cm?
有内半径分别为1厘米和4厘米且深度相等的圆柱形容器A和B，把A容器装满水，再倒入B容器里，水的深度比容器深度的(3/4)还低3厘米，容器的深度是多少厘米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">3.14 / 50.24</gadget>
<output>0.0625</output>

<gadget id="calculator">(3/4) - 0.0625</gadget>
<output>0.6875</output>

<gadget id="calculator">3 / 0.6875</gadget>
<output>4.363636</output>

<result>4.363636</result>