A cuboid aluminum block with a length of 19 cm, a width of 5 cm, and a height of 3 cm and a cube aluminum block with a side length of 7 cm are melted and cast into a cylindrical aluminum block with a bottom circumference of 31.4 cm. Find the height of the aluminum block ?
把一块长19厘米，宽5厘米，高3厘米的长方体铝块和一个棱长为7厘米的正方体铝块熔铸成一个底面周长为31.4厘米的圆柱形铝块，求铝块的高是多少？
<gadget id="calculator">19 * 5 * 3</gadget>
<output>285</output>

<gadget id="calculator">7 * 7 * 7</gadget>
<output>343</output>

<gadget id="calculator">285 + 343</gadget>
<output>628</output>

<gadget id="calculator">31.4 / 3.14 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<gadget id="calculator">628 / 78.5</gadget>
<output>8</output>

<result>8</result>