77×13+255×999+510

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77×13+255×999+510
77×13+255×999+510

77×13+255×999+510
=7x11x13+255*(1000-1)+255*2
=11x91+255*1001
=1001*(1+255)
=256256

77×10+77×3+255×(999+1)+255

=7x11x13+255*(1000-1)+255*2
=11x91+255*1001
=1001*(1+255)
=256256
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77×13+255×999+510
=7×11×13+255×999+255×2
=11×91+255×(999+2)
=1001+255×1001
=1001×(1+255)
=1001×256
=256256