Let's take some examples
20 ÷ 2
= 20/2
= 10
(−20) ÷ 2
= (-20)/2
= −10
20 ÷ (−2)
= 20/(-2)
= 20/(-2)
= −10
(−20) ÷ (−2)
= (-20)/(-2)
= 20/2
= 10
Division by 1
20 ÷ 1
= 20/1
= 20
Number ÷ 1
= Number/1
= Number
Any number divided by 1 is the number itself