6800/170=680/(17)=(34)/85=()/()

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6800/170=680/(17)=(34)/85=()/()6800/170=680/(17)=(34)/85=()/()6800/170=680/(17)=(34)/85=()/()6800/17

6800/170=680/(17)=(34)/85=()/()
6800/170=680/(17)=(34)/85=()/()

6800/170=680/(17)=(34)/85=()/()
6800/170=680/(17)=(34)/85=(2)/(5)