Consider the wiggle expression `2_{4}3_{5}4;_{6}5_{7}6`. One way to calculate its value is to telescope from left and right towards the face value superdigit. Telescoping from the left :
`2 xx 4 = 8,`
`8 + 3 = 11,`
`11 xx 5 = 55,`
`55 + 4; = 59;`
Telescoping from the right :
`6 -: 7 = \frac{6}{7},`
` \frac{6}{7} + 5 = 5 \frac{6}{7} = \frac{41}{7},`
` \frac{41}{7} -: 6 = \frac{41}{42}.`
Combining these, we get
`2_{4}3_{5}4;_{6}5_{7}6 = 59 \frac{41}{42}.`
We shall eventually see a more efficient process for the fractional part of such problems than telescoping from the right, but not just yet.
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