\displaystyle{ 20/4=5 }

In mathematics, the word "division" means the operation which is the opposite of multiplication. The symbols for division are the slash (\displaystyle{ / }) and the fraction line, as in:

\displaystyle{ 6/3 } or \displaystyle{ \frac 63 }

where each of the three expressions means "6 divided by 3", with 2 as the answer. The first number is the dividend (6), and the second number is the divisor (3). The result (or answer) of a division is the quotient, where any left-over amount as whole numbers is called the "remainder". For example, \displaystyle{ 14/4 } gives quotient 3 with remainder 2, all expressed as the mixed number \displaystyle{ 3\frac12 } or 3.5).