A and B transport a total of 108 tons of goods. If A assigns (1/7) of the task to B, the ratio of A's transport task to B's transport task is 5:4. How many tons is the original transport task assigned by A?
甲乙共运货物108吨，如果甲将任务的(1/7)给乙运，则甲的运输任务和乙的运输任务的比是5：4，甲原来分配的运输任务是多少吨？
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">108 * (5/9)</gadget>
<output>60</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">60 / (6/7)</gadget>
<output>70</output>

<result>70</result>