1. Start with the premise that 1 inch equals 25.4 millimeters. 2. Divide 25.4 millimeters by 8 to reach 3.175. This means that 1/8inch is equal to 3.175 millimeters. 3. Multiply
http://www.ehow.com/how_5960128_convert7_8inches...

You need to specify the '7.8' If you are talking about inches obviously 7.8 is bigger.
http://wiki.answers.com/Q/What_is_bigger_7.8_or_1_...

Each small line on the ruler is one eighth of an inch, so the third line will
http://www.chacha.com/question/whereis3&%2347%3B...

Yes, you could say that. is what's left when, from the unit you subtract. This is because. and in general, from any integer. except for. Weird things happen when you try to divide
http://www.quora.com/Mathematics/Whatdoes78mea...
