Shilpa & Reena are partners in a Tech firm sharing profits & losses in the ratio of 5:3. They admitted Gita as a new partner for 1/5 of the share in the firms future profits. Calculate the new profit sharing ratio of Shilpa, Reena & Gita & compute how much Shilpa & Reena need to sacrifice their share to give Gitas share.

The answer should be a at least 600 words with the calculation part in word format