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3 + 1 + 2 + 4 + 5 equals
fifteen
777+777-777×777÷777=______ ．
777 + 777-777 × 777 △ 777 = 777 + 777-777 × (777 △ 777) = 777 + 777-777 = 777 + (777-777) = 777
Please help to work out the following problem (number learning). These numbers are equal to 777 if they are added up three times
777÷3=259
therefore
Number = 2, learning = 5, learning = 9
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