To check a condition, we have to use a logical operation that only results in Boolean values (TRUE or FALSE). But multiplying TRUE or FALSE with the sum_range will only result in 0s. So, to convert those boolean
If you don’t want to change the format of the cells, you can use the TEXT function to calculate and output the time difference as a text string. With the TEXT function, you don’t need to apply formatting to the cells, you can just specify the format of the output right within the...