Find the product
(b1)(b43+b42+b41++b3+b2+b+1)\displaystyle {\left({b}-{1}\right)}{\left({b}^{{43}}+{b}^{{42}}+{b}^{{41}}+\ldots+{b}^{{3}}+{b}^{{2}}+{b}+{1}\right)}


Ans =