To solve this expression, we will follow the order of operations (PEMDAS):

First, we will add 127563 and 52437:
127563 + 52437 = 180000

Then, we will divide the result by 30:
180000 / 30 = 6000

Next, we will subtract 870000 from 6000:
6000 - 870000 = -864000

After that, we will divide the result by 1000:
-864000 / 1000 = -864

Finally, we will add 7984 to -864:
-864 + 7984 = 7120

Therefore, the final result of the expression (127563 + 52437) / 30 - 870000 / 1000 + 7984 is 7120.