Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 18ce652991196a38375c9167b7cb1e7f1f71865c97c0b078ed8cc6ab4ca45beb:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^