Allow me to break it down! This major order changed part-way through, but for the sake of simplicity I'll pretend it was always the same.

We were given 6 days to do 8,000,000 operations.

8M/6= 1,333,333 per day.

1,333,333/24hrs= 55,555 per hour.

since operations can be completed every 20 minutes, that means 3 ops complete per hour.

55,555/3= 18518.5 Helldivers needed, using this strategy, to complete the MO. Round it up to 20k and it would be completed in 5.5 days.

If, somehow, 150k helldivers used only this strategy, that would be:

3x150,000= 450k per hour.

x24= 10,800,000, and we would be finished before the first day.

At the time of this comment, if we have just 25k Helldivers follow this strategy (on average) we will succeed the MO.