5^-8 * 5^10-7^-3:7-5+((3/4)^2)^-1

5^-8×5^10-7^-3:7+5((3/4)²)^-15²-7^-4+5×(3/4)^-225-1/7⁴+5×(4/3)²25-1/2401+5×16/925-1/2401+80/9540225-9+192080/21609732296/2160933 целых 19199/21609