@UCLA B wrote:
20% more than 50 is 60.
It's 20% off the total amount billed.
62.5 is 50 for the freelancer after the fee.
Share with the freelancer the link to calculator/ fees, maybe he/she is new to the platform and still learning how things work here. As others said, the freelancers include the fee into their final pricing. Generally speaking the freelancers don't mention to their clients about Upwork fees.
Best is to discuss the final amount billed before sending a firm offer to make sure there is no misunderstanding.