Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 904a9c4cdac5ca1ac2b3124756664903260c86e66e8862c9593d81a3b8f7dcf8:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^