Lily estimated a quotient of 120 and found an actual quotient of 83. What should she do next? Explain.

She should carefully check her quotient. The difference between

the estimate and the quotient is too big. At least one of them is

way wrong, and possibly both of them may be. The quotient is

the one that she really needs, so she should start checking there,

and maybe she'll find the mistake right away.