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462400+102400-680\times 320=7
Multiply 680 and 680 to get 462400. Multiply 320 and 320 to get 102400.
564800-680\times 320=7
Add 462400 and 102400 to get 564800.
564800-217600=7
Multiply 680 and 320 to get 217600.
347200=7
Subtract 217600 from 564800 to get 347200.
\text{false}
Compare 347200 and 7.
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