\(25\times\left\{32\div\left[12-4+4\times\left(16\div2^2\right)\right]\right\}\)
\(25\times\left\{32\div\left[12-4+4\times\left(16\div4\right)\right]\right\}\)
\(25\times\left\{32\div\left[12-4+4\times4\right]\right\}\)
\(25\times\left\{32\div\left[12-4+16\right]\right\}\)
\(25\times\left\{32\div\left[8+16\right]\right\}\)
\(25\times\left\{32\div24\right\}\)
\(25\times\frac{4}{3}\)
\(\frac{100}{3}\)