Cool real time calculator about the cost of meeting times

name of the app/page = Cost of a meeting

We want to make a cool online calculator where people can enter in a couple of values and then have the page keep track in real time the cost of the meeting. Here is an ugly version of something similar we found https://mpc.olpe.fi/ - we like the way you can easily add more people and an average cost. we dont like the ui/ux at all.

we found another calculator from harvard business but it seems like a lot of clicking and nothing real time https://hbr.org/2016/01/estimate-th…calculator

we would like to come up with a cool 1 page app that will let users visit it, put in a number of people, and a dollar amount, and then hit start and have the page update them with the real time cost of the meeting and the duration of time that has passed. We like the way harvard will let you set the salary of each person so maybe we have this as an advanced setting but the default quick setting should be like the ugly site.

something modern but business focused. Ideally the numbers are clear and the ui is simple and to the point. I would save fancier than what Harvard business has in the examples but something that would feel at home to that audience

i described it pretty well in the brief above but a few things we must have

Start /Stop button
Show the current clock time, and duration
Show current cost of the meeting once started
an advanced mode to be able to put in the annular salary of the number of people in the meeting - like Harvard did with their
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other fun things
-send to a colleague where it will email them a link to the current meeting
-social sharing of the tool, not specific to the current meeting context

i like the current style and typography of https://mailchimp.com/ and