It is known that the product of 9 numbers is 800, if one of the numbers is changed to 4, the product of these 9 numbers is 200, if the other number is changed to 30, the product of these 9 numbers becomes 1200, then this What is the product of 7 numbers other than the two changed numbers.
已知9个数的乘积是800，将其中一个数改为4，这9个数的乘积是200，若再将另外一个数改为30，则这9个数的乘积变为1200，则这两个被改动的数以外的7个数的乘积是多少．
<gadget id="calculator">800 / 200</gadget>
<output>4</output>

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

<gadget id="calculator">1_200 / 200</gadget>
<output>6</output>

<gadget id="calculator">30 / 6</gadget>
<output>5</output>

<gadget id="calculator">16 * 5</gadget>
<output>80</output>

<gadget id="calculator">800 / 80</gadget>
<output>10</output>

<result>10</result>