4.7k+5.3k-0.83 = 10k-0.83
10k-0.83=10*0.83-0.83=8.3-0.83=7.47
10k-0.83=10*8,3-0.83= 83-0.83=82.17
10k-0.83=10*0.083-0.83=0.83-0.83=0
4.7k+5.3k-0.83 = 10k-0.83
10k-0.83=10*0.83-0.83=8.3-0.83=7.47
10k-0.83=10*8,3-0.83= 83-0.83=82.17
10k-0.83=10*0.083-0.83=0.83-0.83=0