At the end of each row is a “total” calculation of hours

round(add(add(add(add(add(add(dateBetween(end(prop("Input 1")), start(prop("Input 1")), "minutes"), dateBetween(end(prop("Input 2")), start(prop("Input 2")), "minutes")), dateBetween(end(prop("Input 3")), start(prop("Input 3")), "minutes")), dateBetween(end(prop("Input 4")), start(prop("Input 4")), "minutes")), dateBetween(end(prop("Input 5")), start(prop("Input 5")), "minutes")), dateBetween(end(prop("Input 6")), start(prop("Input 6")), "minutes")), dateBetween(end(prop("Input 7")), start(prop("Input 7")), "minutes")) / 60)

As well, implement an “hours worked” property to return monetary value

round(add(add(add(add(add(add(dateBetween(end(prop("Input 1")), start(prop("Input 1")), "minutes"), dateBetween(end(prop("Input 2")), start(prop("Input 2")), "minutes")), dateBetween(end(prop("Input 3")), start(prop("Input 3")), "minutes")), dateBetween(end(prop("Input 4")), start(prop("Input 4")), "minutes")), dateBetween(end(prop("Input 5")), start(prop("Input 5")), "minutes")), dateBetween(end(prop("Input 6")), start(prop("Input 6")), "minutes")), dateBetween(end(prop("Input 7")), start(prop("Input 7")), "minutes")) / 60) * prop("Hourly Rate")

View Example In Notion