Ten digits: four words plus two (from the tower) or one word, so the word =6.

Hundreds: 3 gold plus 2 (in the same way) or gold, so gold =9.

Qian: Two studies add up to two (in the same way) or learning so learning =2.

The last number =30-5-6-9-2=8.

So the mathematical pyramid is 82965.