...for me that I have been afflicted - that I might learn thy statutes." 27 dtg = 71 decimal
Left hand: two fingers up (choose any two, really - I simply use my index and middle because it is comfortable)
Right hand: Thumb, index finger, and middle finger down - and the ring and little fingers up. On the right hand, it matters which fingers you choose, because "not all digits are given equal values." See, the thumb is worth one, the index finger worth two, and the middle finger four.
Add them up, and you get seven.
Add that to two on the left hand, multiplied by thirty two to get sixty four, and you get, again, decimal seventy one.