This question was asked in Ex 6.1, 8

1+1+1+1+1+2+2+2×2+2+3+33+3+3+4+4+4+4+4+5+5+5+×5+5+6+6+6+6+6+7+7+7×7+7+8+8+8+8×8+9+9+9+9+9= ?

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