This week in math we learned how to convert units of measurement in a simple way between both longer/shorter units within the same system, and between the metric and imperial systems.
Easy to do, you simply need to know how many of one unit is equal to the other unit.
Example: The units that you wish to convert go on the left (6780cm), the units that you wish to convert to go in the numerator position (1m) and however many units of one equal the other (100cm) in the denominator.
Then simply evaluate your expression
The same can be done for converting units between the metric and imperial systems.
Example: If you know 1ft is equal to 0.3048m, then you repeat the same steps again.