A train travels from place A to place B. After traveling the whole distance (9/13), it travels at a speed of 90 kilometers per hour for 4 hours before arriving at place B. How many kilometers is the total distance between places A and B?
一列火车从甲地开往乙地，行了全程的(9/13)后，又以每小时90千米的速度行了4小时才到达乙地，甲乙两地全程是多少千米？
<gadget id="calculator">9 / 13</gadget>
<output>9/13 = around 0.692308</output>

<gadget id="calculator">1 - (9/13)</gadget>
<output>4/13 = around 0.307692</output>

<gadget id="calculator">4 / (4/13)</gadget>
<output>13</output>

<gadget id="calculator">90 * 13</gadget>
<output>1_170</output>

<result>1_170</result>