212 



ought to be placed below the fourth, and the double of the first 

 below the third, thus : 



N = 6,59 197457 

 + 126 



534 = 6-89 

 But the work can be done more easily in the following way : 



Ex.gr. I. 



N=6,59197457 

 + 37 



6,289 

 + 37 



7,387 

 58 



45 = 5-89 



