The construction of a bridge is divided into three investments, the first investment amount is the second (7/8), the second investment amount is the third (8/9), it is known that the third investment is more than the first investment 600,000 yuan, how much is the total investment in building this bridge? (Multiple ways to answer)
建造一座大桥分三次投资，第一次投资额是第二次的(7/8)，第二次投资额是第三次的(8/9)，已知第三次比第一次多投资60万元，建造这座大桥共投资多少万元？(多种方法解答)
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">60 * (8/9)</gadget>
<output>160/3 = around 53.333333</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">(7/8) * (8/9)</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">(160/3) / (2/9)</gadget>
<output>240</output>

<gadget id="calculator">240 * (7/8)</gadget>
<output>210</output>

<gadget id="calculator">(160/3) / (2/9) / (8/9)</gadget>
<output>270</output>

<gadget id="calculator">210 + 240 + 270</gadget>
<output>720</output>

<result>720</result>