One piece of wire, the first time I used the full length (1/10), the second I used the rest (1/9), the third time I used the second (1/8)..., The ninth time used the remaining (1/2) of the eighth time, which was exactly 5 meters at this time. How many meters is the total length of this wire?
一根电线，第一次用了全长的(1/10)，第二次用了剩下的(1/9)，第三次用了第二次剩下的(1/8)…，第九次用了第八次剩下的(1/2)，这时正好是5米，这根电线全长多少米？
<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<result>50</result>