Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 20e73d7d1c759e7a6800247701a4da002cd8c4f5042a8f44f5af3a9cccc01de8:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^