Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2963639b303bf560529dad51ae48f21e4b7937afafb63da0e0dc98e62cbd69eb:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^