#Tip 1:
To multiply an even number by 5
e.g. 36 * 5
>>>Step 1: Divide the number by 2
36/2 = 18
>>>Step 2: Attach zero to the answer from step 1
180
That's the answer
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#Tip 2:
To multiply an odd number by 5
e.g. 127*5
>>>Step 1: Subtract on from the number
127 - 1 = 126
>>>Step 2: Divide the result by 2
126/2 = 63
>>>Step 3: Attach 5 to the end of the result
635