Look at the underlined digit. Go to the digit to the right. If that digit is 5, 6, 7, 8, or, 9 add one more to the underlined digit. If that digit is 4, 3, 2, or 1 keep the underline digit. Remember to keep all the digits to the left of the underline digit and all the digits to the right become zeros

179,

The four tells me to keep the 8

I need to remember to keep the digits to the left the same and all the digits to the right become zeros.

179,

179,

__8__**4**3 (look at the digit to the right)The four tells me to keep the 8

I need to remember to keep the digits to the left the same and all the digits to the right become zeros.

179,

__8__43