Typical mass of polypeptide is between 1000 and 10 000.
How much bigger than this range of sizes is a polypeptide of 6.864*10^29???
A feel for order of magnitude is a very valuable and very neglected skill - especially in the sciences. As is giving the unit associated with a number ...... Sadly the focus is all too often solely on getting a number, sod the unit ....... All comment welcome.