A car travels the whole way (7/9), and there is still 140 kilometers away from the destination. How many kilometers is the whole journey? ．
一辆汽车行驶全程的(7/9)，离目的地还有140千米，全程多少千米？．
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">1 - (7/9)</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">140 / (2/9)</gadget>
<output>630</output>

<result>630</result>