A factory produced 420 machines in October, the number of machines produced in September was October (9/10), and the number of machines produced in November (9/11), how many machines were produced in November?
某工厂十月份生产机器420台，九月份生产的台数是十月份的(9/10)，又是十一月份生产台数的(9/11)，十一月份生产机器多少台？
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">9 / 11</gadget>
<output>9/11 = around 0.818182</output>

<gadget id="calculator">(9/10) / (9/11)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">420 * (11/10)</gadget>
<output>462</output>

<result>462</result>