Witch European explored is giving credit for circumnavigating or scaling around the world

Ferdinand Magellan.

Explanation:

The European explorer which is often credited to circumnavigate the globe is Ferdinand Magellan. Ferdinand Magellan was a Portuguese explorer who set on expedition in 1519, to find a western route to South-east Asia. Magellan had a sense of adventure since he was young. In 1519, Magellan was sponsored by Spain to explore and find the route to East Indiea, which was reach in spices and gems.

Though, Magellan is credited to circumnavigate around the globe, but he did not complete it. Of five ships that left for the expedition, only one returned with Magellan being killed by islanders in 1521.

23,598 because  513 x 40 = ( 500 x 40 ) + ( 10 X 40 ) + ( 3 x 40 ) = 20 000 + 400 + 120 = 20,520 and another partial product is  513 x 6 = ( 500 x 6 ) + ( 10 x 6 ) + ( 3 x 6 ) = 3 000 + 60 + 18 = 3,078. so 20,520 + 3,078 = 23,598