A string of beads is strung together in a circle with 8 red and 2 black beads, a total of 40 beads. A cricket jumps from the second black bead, and each time it jumps 6 beads and lands on the next bead, how many times does the cricket need at least before it lands on the black bead again?
一串珠子按照8个红色2个黑色依次串成一圈共40粒．一只蟋蟀从第二个黑珠子开始其跳，每次跳过6个珠子落在下一个珠子上，这只蟋蟀至少要多少次，才能又落在黑珠子上．
<result>7</result>