Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dc9e1fb7cd264d5e52142895cda367e40c17bb9c9a3d2e0ad49aa49483473af2:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^