Will's Commercial Arithmetic, Presenting the Best Usage in Modern Business Practice #255351

Explanation. TO discover the name Of each period in the given number and the figures which compose it, commence at the right and separate it into periods of three figures each, as follows: As the right hand period (219) is pointed Off, think Of its name (units); as the second period (496) is pointed off, think of its name (thousands); as the third period (728) is pointed Off, think Of its name (millions), and so continue until the left-hand period (26) is reached, which is thus found to be trillions.