97,818
unless you mean 97.818 --> 97.8
Step-by-step explanation
97,818 is not a decimal, so you cannot round it.
IF it is 97.818
the last 8 would make 1 into 2.
but 2 is less than 5
5 and over means you can make the next number bigger.
4 and lower means you keep the same.
hence the next 8 stays the same since 1 is less than 5.