Can i find hash below target with rate 43.000.000.000 in 3 days?
I assume you mean 43GH/s hash rate.
With the current network difficulty, the odds of you finding a block at 43GH/s are
Chance per block: 1 in 22,010,930,233
Chance per day: 1 in 152,853,682
Time estimate: 418,777 years
So no not any time soon, though stranger things have happened.