Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d6a39813b2376fb10ce065f435d4c3ad2a036242ec0d6e70956960bf3ab6dbe9:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^