Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f8160b724808bddc57d0f1c2dad9a747a93b1deb3fd6d1c0b05b9a07baccece2:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^