100000-1627385784758, -1.62738478476e+12, 173924856748969, 1234567890-1234567890, 0000000000, 123456789082746, 1234-5678, -4444, 12345678, bonus question 5x5+500-80, 445, 345, 2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-10000000000000000, -1e+16, 33734873, 829193, 2683748

subtraction for forth grade

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