Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6e67f3faefb9c3740e8d5407100e204d54d11d02c83dab6d27cb23ae2d002111:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^