TIMO - 2019 - Grade 8 - Heat Round - Paper 3 Question 8

Find $\frac{1}{14\times34}+\frac{1}{34\times20}+\frac{1}{46\times26}+\frac{1}{20\times46}+\frac{1}{7\times20}+\frac{1}{20\times13}$. Give your answer as a fraction in simplest form.