Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7a88177779b40223731f0c095ef1171cc2b674a24fb4659d1eb22ec9f7c7ea05:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^