The contents of the B register is then shifted to {HEAD ~ the right} by the proper number of places so that the exponent difference between the numbers in {TAIL ~ the A and B registers} is zero.  
The contents of the B register is then shifted to { HEAD ~ the right } by the proper number of places so that the exponent difference between the numbers in { TAIL ~ the A and B registers } is zero .
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH