enter 9753, type on LOG (not LN), multiply by 321 = 1280.51336997
take the fractional part (after the point: 0.51336997) and Type on 10x you'll get 3.26114...
So 9753 exp 321 is about 3.26114...x10 exp 1280
321 + 321 = 642
320 + 321 + 160 + 161 = 962
-182 + 321 = 139
200 + 175 + 286 + 304 + 321 = 1,286
321 + 432 = 753
123 + 321 = 444
976.
The answer is 347.
444
Adding 79 to 321 gives 400 as the result(79+321).
-987 + 654 + 321 = 0 .
321 = 3*107