Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c4ffefadea76951ecdbf7b1c8fc2a5da065a87f385f427e3b9d4f8f809ace39d:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^