You can put this solution on YOUR website!
round off 234.784 to 2 decimal places
you look at the next digit and:
if the next digit is 5 or greater, you round up.
if the next digit is less than 5, you round down.
5.437 would round to 5.44
5.435 would round to 5.44
5.434 would round to 5.43
5.43499999999 would round to 5.43
you only look at the next digit after the one you want to round.
you don't look any further than that.