A bottle with an inner diameter of 8cm and a height of 7cm of water, the bottle cap is screwed tightly and placed upside down, the non-water part is a cylinder with a height of 18cm. What is the volume of this bottle in milliliters.
一个内直径是8cm的瓶子，水的高度是7cm，把瓶盖拧紧倒置放平，无水部分是圆柱形，高度是18cm．这个瓶子的容积是多少毫升．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

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

<gadget id="calculator">3.14 * 16 * 7</gadget>
<output>351.68</output>

<gadget id="calculator">3.14 * 16 * 18</gadget>
<output>904.32</output>

<gadget id="calculator">351.68 + 904.32</gadget>
<output>1_256</output>

<result>1_256</result>