Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b321531e326687d447d6d6b22c074bb1ac6aa1e0dc4e68a6817b845b18cd3d7a:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^