Simplify and write the following in exponential form:
 
(a) \(10^{-3} \times 10^{-8}\) \(=\)ii
 
(b) \(3^{10} \div 3^{6}\) \(=\) ii
 
(c) \( 13^{-8} \div 13^{2}\)\(=\) ii
 
(d) \(m^{3}n^{10}(mn)^{6}\) \(=\) ii×ii