en_tn/2ch/08/17.md

Ezion Geber and then to Elath on the coast

These are towns along the Sea of Reeds. They had ports where people who had ships could stop. AT: "the towns of Ezion Geber and Elath, on the coast of the Sea of Reeds" (See: rc://en/ta/man/translate/translate-names and rc://en/ta/man/translate/figs-explicit)

Ophir

This is the name of a place. Its location is not known. (See: rc://en/ta/man/translate/translate-names)

450 talents of gold

"four hundred and fifty talents of gold." You may convert this to a modern measure. AT: "about sixteen thousand kilograms of gold" or "about fifteen metric tons of gold" (See: rc://en/ta/man/translate/translate-numbers and rc://en/ta/man/translate/translate-bweight)