Solution: from the meaning of the question: every 8 numbers cycle, followed by thumb, index finger, middle finger, ring finger, little finger, ring finger, middle finger and index finger;

( 1)66÷8-8…2;

So 66 is the second position of the ninth cycle, especially on the index finger.

Answer: Count to 66, right on your index finger.

(2) 198÷8=24…6,

So 198 is in the sixth position of week 25, on the ring finger.

Answer: When you count to 198, it is on your ring finger.

This is the way to look at it.