{[(2/3)²⁰⁰⁸x(2/3)²]²:(2/3)²⁰ - (2/3)⁴⁰⁰⁰} x (26/87)²={[(2/3)²⁰⁰⁸⁺²]²:(2/3)²⁰-(2/3)⁴⁰⁰⁰}x(26/87)²=
{[(2/3)²⁰¹⁰]²:(2/3)²⁰-(2/3)⁴⁰⁰⁰}x(26/87)²=
{(2/3)⁴⁰²⁰⁻²⁰-(2/3)⁴⁰⁰⁰}x(26/87)²=
[(2/3)⁴⁰⁰⁰-(2/3)⁴⁰⁰⁰}x(26/87)²=
(2/3)⁴⁰⁰⁰x(1-1)x(26/87)²=
(2/3)⁴⁰⁰⁰x0x(26/87)²=0