| In the twelfth century, there was a sudden multiplication of women's hospices, houses of reclusion, and beguinages of all sizes. |
| The multiplication is either triggered by genetic abnormality or external factors. |
| Note that multiplication is done using a SINGLE full bit adder, with the carry bit and output fed back in as feedback loops. |
| They were all excited doing their addition, subtractions, multiplications and divisions, mentally and with abacus. |
| One could verify this by doing two different long multiplications and checking that they give the same answer. |
| People who needed to do many multiplications or divisions probably looked the answers up in a table, or hired someone who could. |
