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We introduce the Mathematica package SummerTime for arbitrary-precisioncomputation of sums appearing in the results of DRA method. So far theseresults include the following families of the integrals: 3-loop onshellmassless vertices, 3-loop onshell mass operator type integrals, 4-loop QED-typetadpoles, 4-loop massless propagators. The package can be used forhigh-precision numerical computation of the expansion coefficients of theintegrals from the above families around arbitrary space-time dimension. Inaddition, this package can also be used for calculation of multiple zetavalues, harmonic polylogarithms and other transcendental numbers expressed interms of nested sums with factorized summand.

Introducing SummerTime: a package for high-precision computation of sums appearing in DRA method