Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 55a4be1f5978c99a8120297e49eda723e8260c549fbe639ce9452dcaabe45751:14:32
   |
14 |                                 let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^