The second cell is 2 1 = 2.

The third grid is 2 2 = 4.

……

When wheat was placed in the 28th grid, the number of grains in this grid had exceeded 654.38 billion.

About (9223720368) ten thousand capsules should be put in the 64th box.

Total number of wheat grains required

1+2+2^2+2^3+2^4+……+2^63=2^64- 1

= 1844674407370955 16 15。