The maximum speed of most highways I pass is 120 kilometers per hour, which is 9 kilometers less than the speed of the maglev train (3/10), and the speed of the maglev train can reach how many kilometers per hour.
我过大多数的高速公路的最高时速为每小时120千米，比磁悬浮列车的时速的(3/10)少9千米，磁悬浮列车的时速可达到每小时多少千米．
<gadget id="calculator">120 + 9</gadget>
<output>129</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">129 / (3/10)</gadget>
<output>430</output>

<result>430</result>