Divide means to take groups of things and partition them to equal sets. Or it could mean deciding how many persons or things can fit into a given whole. For example, we want to know how many buses are needed for 40 students if a bus can take 10 at a time. Alternatively, if we know that a bus can seat only 10 students, how many buses are needed for 40 students.
Zero- Zero can mean nothing. Or if you initially have something and someone takes all of that something, then you have nothing, or zero. Zero can also mean a reference point, a starting b=point, much like the zero in the number line. Zero can also mean adding 2 opposite numbers that cancel each other. As a reference point, zero can mean elevation at sea level (ground0, or zero temperature.
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