MR-869 / 5a. problem

Simplify the following expression:

A=-12-3-2·75-1·-4025-14·66·104

A=-12-3-2·75-1·-4025-14·66·104

A=-22·3-3-2·52·3-1·152-14·3·26·5·24

A=-22·3+6·5-2·3-152-4·36·26·54·24

A=-212·36·5-2·3-15-8·36·26·54·24

A=5-2·3-1·2125-4·210

A=54·2252·3

A=52·223

A=25·43

A=1003