remember, in a wheel the first and the last spokes make another space but with fingers the first and last finger don't make a space......
a wheel is like a circle;
take an example of a circle with radii and start with 3 radii makes 3 spaces, 4 radii make 4 radii, 5 radii make 5 radii , ... 64 radii make 64 spaces.

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a wheel is like a circle;

take an example of a circle with radii and start with 3 radii makes 3 spaces, 4 radii make 4 radii, 5 radii make 5 radii , ... 64 radii make 64 spaces.