1/3+1/9+1/27+1/81+1/243=4/9+4/81+1/243=40/81+1/243=121/243
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G=1/3+1/9+1/27+1/81+1/243
1/3+1/9+1/27+1/81+1/243+1/729
1+1/3+1/9+1/27+1/81+1/243+1/720=?
1/3+1/9+1/27+1/81+1/243=?
1/3+1/9+1/27+1/81+1/243
1+ 1/3+1/9+1/27+1/81+1/243 = ?
1/3 + 1/9 + 1/27+1/81 + 1/243+ 1/729.
1/3+1/9+1/27+1/81+1/243+1/729 =?
1/3+1/9+1/27+1/81+1/243+1/729