Sixth halving (2032):

Block reward will be reduced from 1.5625 #BTC to 0.78125 #BTC.

Seventh halving (2036):

Block reward will be reduced from 0.78125 #BTC to 0.390625 #BTC.

For 0.4 #Bitcoin:

₿: 0.4 * 29k = $11.6k

₿: 0.4 * 40k = $16k

₿: 0.4 * 100k = $40k

₿: 0.4 * 500k = $200k

For 0.8 #Bitcoin:

₿: 0.8 * 29k = $23.2k

₿: 0.8 * 40k = $32k

₿: 0.8 * 100k = $80k

₿: 0.8 * 500k = $400k