What the Spanish does with a figure
A record is often mostly numbers: an amount paid, a fee entered on a court sheet, a weight, a floor area, a count of pages. The Spanish repeats each one as the page prints it, in the same currency and the same units. Nothing is turned into another currency and nothing is rounded, because a certified translation for Uruguay is a record of what your paper says.
A converted sum would be the translator's own arithmetic, and it would date the page as well, since rates move from one week to the next while a record does not. A reader in Uruguay who works in another currency every day can still line the two pages up and see that one figure answers the other.
The language Uruguay requires
A certified translation into Spanish in Leicester is what a document used in Uruguay has to arrive with, and an English page is not read in its place. The rule covers the whole record, figures included, so the Spanish and the source can be compared line by line. Nobody reading the file should have to move between two languages to follow a single total.
Certification Uruguay accepts
The Spanish is carried by a certificate of accuracy: a dated sheet, signed by a certified translator, that names the document and states that the Spanish matches it. That sheet is what an office in Uruguay looks for, and it belongs with the pages rather than filed on its own. A certified translation in Leicester for Uruguay is read as one set with three parts, so keep them together from the day they arrive.
Per-page cost and turnaround
An official Spanish translation in Leicester costs £25 a page, whether the page is crowded with figures or holds only a few lines. Standard work runs 2–3 business days from a clear scan, and the express route closes in 24 hours where a date is already fixed. Because the rate is per page, adding up your sides first gives the whole cost in one line, and a long record holds no surprise at the end.