AMO 2027 Grades 8-9 SET 7 - Self-study Question 1

Define the symbol $[x]$ to be the greatest integer less than or equal to $x$. For example: $[12.7]=12$, $[2]=2$ and $[-3.2]=-4$.

Compute the integer square value of the expression below.
$$\frac{[112000.111222]\times[300.456]}{[1200000.987654321]}$$