pile of colored balls, red and yellow, among the first 50 balls counted, there are 49 red balls. After that, there are 5 red balls in every 6 balls counted. Count until the last 6 balls, exactly the end of the count. If no less than 90% of the counted balls are red balls, then the maximum number of balls in this pile can only be how many.
一堆彩色球，有红、黄两种颜色，首先数出的50个球中有49个红球．以后每数出的6个球中都有5个红球．一直数到最后6个球，正好数完．如果在已数出的球中红球不少于90%，那么这堆球的数目最多只能有多少个．
<gadget id="calculator">6 * 10</gadget>
<output>60</output>

<gadget id="calculator">50 + 60</gadget>
<output>110</output>

<result>110</result>