If you aren't joking and genuinely confused.
They don't mean anything - they're used to show the idea of pouring water 5 times.
Use B grams of beans.
Use W = 3 * B * 5 grams of water
Basic method:
1. Pour 5 times (p0 .. p4) each using 3 * B grams of water.
2. Wait 45 seconds before you pour again.
3. Allow the dripper to keep dripping for 3.5 minutes.
Adjust sweet/acidic taste balance:
p0 - δ grams, p1 + δ grams - sweeter.
p0 + δ grams, p1 - δ grams - more acidic.
Adjust strength by dividing the final 9 * B grams of water differently:
stronger - pour less water more times.
weaker - pour more water less times.