Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 89ff2dac2d97a10203613d4367b0c2fb6ce6a94cd26c411dc7602749a9753fda:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^