Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dcfc02d87427036f682ade54926bdbaaa9d6619a1c6afa1ebe817ae694c85cfb:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^