\(\left\{\left[261-\left(36-31\right)^3.2\right]-9\right\}.1001.2016^0\)
\(=\left\{\left[261-5^3.2\right]-9\right\}.1001.2016^0\)
\(=\left\{\left[261-125.2\right]-9\right\}.1001.2016^0\)
\(=\left\{\left[261-250\right]-9\right\}.1001.2016^0\)
\(=\left\{11-9\right\}.1001.2016^0\)
\(=2.1001.2016^0\)
\(=2002.2016^0\)
\(=2002.1\)
\(=2002\)
\(\left\{\left[261-\left(36-31\right)^3.2\right]-9\right\}.1001.2016^0\)
\(=\left\{\left[261-5^3.2\right]-9\right\}.1001\)
\(=\left[\left(136.2\right)-9\right].1001\)
\(=\left(272-9\right).1001\)
\(=263.1001\)
\(=263263\)