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∑r=134⌊18r35⌋= ?\large \sum_{r=1}^{34} \left \lfloor \frac{18r}{35} \right \rfloor =\, ?r=1∑34⌊3518r⌋=?
Notation: ⌊⋅⌋ \lfloor \cdot \rfloor ⌊⋅⌋ denotes the floor function.
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