So, one minute of latitude = one nautical mile. As such our first job is to get our difference into minutes - taking the 29 degrees 45 minutes example, we need to multiply the 29 degrees by 60 (as there's 60 minutes in a degree), then add the 45 minutes, thus the calculation is 29*60 + 45, which comes out as 1785 minutes, which is equal to 1785 nm.
In the case of your question, we have 16 degrees 15 mins, so 16*60 + 15 = 975nm. 975 * 1.852 = 1805.7 or 1806 to the nearest km.