1234 % 10 = 4 (4 is the reminder when 1234 is divided by 10)

156 % 10 = 6

12 % 10 = 2

i could understand how the value of above expression is evaluated but

i couldn't figure out how to determine the value of these expression

9 % 10 = ?

1 % 10 = ?

please help me to evaluate the value of the expression when dividend is less than divisor